John Holder's verdict

1) No ball. Because no part of the front foot is behind the popping crease. 2) Legal delivery. Although the front foot is outside the return crease, part of it is behind the popping crease and the law allows that. The former West Indies bowler Colin Croft used to bowl like this, contorting his body in the delivery. This eventually led to him developing back trouble, putting an end to his career as a fast bowler. 3) Legal delivery. Part of the foot landed behind the popping crease, even though it slid over afterwards – it's where the foot lands that counts. Among some of the most fearsome West Indies fast-bowlers, including Curtly Ambrose, Andy Roberts and Malcolm Marshall, all of whom were certainly guilty of the occasional no-ball like these, Michael Holding was the quickest I saw. He was a truly sensational player, who had the most beautifully athletic, graceful approach to the wicket. Seemingly gliding in from 40 yards, his run-up was so silent that Dickie Bird nicknamed him "Whispering Death".

This week's strip was created by Paul Trevillion for the You are the Umpire book – available from Guardian Books. Click here for more on Trevillion, here for the full You Are The Ref archive, and here for the new Ref book.